У меня была точно такая проблема после загрузки пятёрки.
Нужно стереть программу не только на панеле программ, но и в дебрях компьютера.
А затем инталлировать старую версию, и ввести ключ от пятёрки и уже затем инсталлировать новую версию.
Как стереть программу в дебрях компьютера нужно следовать рекомендациям фирмы-производителя программы Photodex:(переписка шла на английском)
1) Go to "Start" > "Control Panel".
2) When you are in the "Control Panel", do one of the following...
a) Click on the "Uninstall a program" option option under the "Programs" category, or
b) If you are using the "Classic View" of the "Control Panel", then you would double-click on the "Programs and Features" icon instead.
You should now be at the "Programs and Features" or "Uninstall or change a program" screen.
3) Look through the list of programs and uninstall all versions of ProShow and the "Photodex Presenter".
4) Double-click on an entry to start the uninstall process. Windows may prompt you with a message stating Windows needs your permission to continue. At this screen you should click on the "Continue" button.
Then, go to "Start" and type in "regedit" and hit <Enter> on the keyboard. That should open the "Registry Editor". Then, expand the "HKEY_CLASSES_ROOT" and find the "ProShow" folder (not the "ProShow Producer" folder or any other ProShow related folder). Then, right-click on the "ProShow" folder and delete it. Next, close the "HKEY_CLASS_ROOT" category (by clicking on the minus symbol to the left of "HKEY_CLASSES_ROOT"), and then expand the next category, which is "HKEY_CURRENT_USER", and go to "Software" > "Photodex", and in the "Photodex" folder, delete the "ProShow" folder. Now close the registry editor. Then, close the "Registry Editor".
NOTE: Skip the next step if you save your show in the "Photodex" or "ProShow Gold" or ProShow Producer" folder. If you do save your shows in one of those folders and if the rest of the steps fail, please let us know you are saving your shows in one of those folders.
Next, go to "Computer" > C: > "Program Files" and delete both the "Photodex" folder and the "Photodex Presenter" folder.
Then, install with the following steps...
1) Download the program with a browser such as Internet Explorer or Firefox. You can start your download at the following URL:
http://files.photodex.com/release/pspro_50_3222.exe2) Then, disable any system security you might have including all anti-virus, anti-spyware, or personal firewalls. Usually, such security programs are represented by small icons next to your clock/time. If you find an icon by your clock/time that represents a security program, right-click on that icon and choose "Disable", "Stop", "Quit", etc.
3) Next, just double-click on the install file you downloaded and it should take you through the installation process. If you are prompted to register during the installation process, please do so.
4) Now, start the program.